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Karp’s conjecture for independent sets in dense random graphs

Prove that for the Erdős–Rényi graph G(n, 1/2), no polynomial-time algorithm can, with high probability, compute an independent set of size at least (1+epsilon)·log_2 n for any fixed epsilon > 0.

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Background

This classic conjecture by Karp concerns the dense regime (p = 1/2) and posits strong average-case hardness for computing unusually large independent sets in G(n, 1/2).

The paper references this conjecture to situate its results within the broader landscape of statistical–computational gaps for independent set problems across regimes.

References

In 1976, Karp conjectured that no polynomial time algorithm can compute an independent set of size at least $(1+ )\log_{2}n$ for any $ > 0$ with high probability for $p = 1/2$ .

The Low-Degree Hardness of Finding Large Independent Sets in Sparse Random Hypergraphs (2404.03842 - Dhawan et al., 5 Apr 2024) in Introduction (Independent Sets in Graphs and Hypergraphs)